I have a 69 440 HP motor in my 73 Challenger. It has 906 heads with a hydraulic cam. Don't know the specs on the cam but it's not a stocker. I'd say about half way between totally radical and bone stock. A nice lope but still pulls nice vacuum.
The motor has great oil pressure and pulls strong.
I've noticed slight valve tapping sounds coming from under the passenger side valve cover. I popped it open and found adjustable rocker arms with some slight play in some of them.
Now I've adjusted rockers before but never on a Mopar.
The method I've used is to roll the motor over until the particular cyl is on the compression stroke. Then I tighten the rocker down until the pushrod starts to drag and go another 1/4 turn. I did that on all the rockers and fired the motor up. The ticking was gone until it came up to temp and I drove it around the block.
I'm thinking that the adjusting assy's are older and coming slightly loose?
Any additional thoughts?
